JavaScript parameter number variable function example

2020-03-30 04:05:54
OfStack

Aside: I have been exposed to JavaScript for a long time, but I did not pay attention to it. I saw many cool and cool web pages with JavaScript in them. The application of Google in JavaScript had the greatest impact on me. I was determined to learn it from scratch, so I had the JavaScript & Ajax column. I'm going to write this column down as a study note, so each essay note will probably be short, one or two sentences notes.

JavaScript allows a function to pass a variable number of arguments, because there is a built-in object called arguments, which is an array of all arguments passed by the function. For example, you can see.



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<title>JavaScript A function with a variable number of arguments </title>

<mce:script language="javascript" type="text/javascript"><!--

function testparams()

{

var params = "";

for (var i=0; i<arguments.length; i++) {

params = params + " " + arguments[i];

}

alert(params);

}



testparams("abc", 123);

testparams(123, "456", 789);

testparams();

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